﻿using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace Trade.Journal.Controls
{
    /// <summary>
    /// 按照步骤 1a 或 1b 操作，然后执行步骤 2 以在 XAML 文件中使用此自定义控件。
    ///
    /// 步骤 1a) 在当前项目中存在的 XAML 文件中使用该自定义控件。
    /// 将此 XmlNamespace 特性添加到要使用该特性的标记文件的根
    /// 元素中:
    ///
    ///     xmlns:MyNamespace="clr-namespace:Trade.Journal"
    ///
    ///
    /// 步骤 1b) 在其他项目中存在的 XAML 文件中使用该自定义控件。
    /// 将此 XmlNamespace 特性添加到要使用该特性的标记文件的根
    /// 元素中:
    ///
    ///     xmlns:MyNamespace="clr-namespace:Trade.Journal;assembly=Trade.Journal"
    ///
    /// 您还需要添加一个从 XAML 文件所在的项目到此项目的项目引用，
    /// 并重新生成以避免编译错误:
    ///
    ///     在解决方案资源管理器中右击目标项目，然后依次单击
    ///     “添加引用”->“项目”->[浏览查找并选择此项目]
    ///
    ///
    /// 步骤 2)
    /// 继续操作并在 XAML 文件中使用控件。
    ///
    ///     <MyNamespace:MarksBox/>
    ///
    /// </summary>
    public class MarksBox : TextBox
    {
        static MarksBox()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(MarksBox), new FrameworkPropertyMetadata(typeof(MarksBox)));
        }

        private ListView PART_List;

         

        public IEnumerable<string> ItemsSource
        {
            get { return (IEnumerable<string>)GetValue(ItemsSourceProperty); }
            set { SetValue(ItemsSourceProperty, value); }
        }

        // Using a DependencyProperty as the backing store for ItemSource.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ItemsSourceProperty =
            DependencyProperty.Register("ItemSource", typeof(IEnumerable<string>), typeof(MarksBox), new PropertyMetadata(null));




        public IEnumerable<string> Values
        {
            get { return (IEnumerable<string>)GetValue(ValuesProperty); }
            set { SetValue(ValuesProperty, value); }
        }

        // Using a DependencyProperty as the backing store for Values.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ValuesProperty =
            DependencyProperty.Register("Values", typeof(IEnumerable<string>), typeof(MarksBox), new PropertyMetadata(null));




        public bool IsEditable
        {
            get { return (bool)GetValue(IsEditableProperty); }
            set { SetValue(IsEditableProperty, value); }
        }

        // Using a DependencyProperty as the backing store for IsEditable.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty IsEditableProperty =
            DependencyProperty.Register("IsEditable", typeof(bool), typeof(MarksBox), new PropertyMetadata(true));





        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();

            PART_List = Template.FindName(nameof(PART_List), this) as ListView;

            CommandBindings.Add(new CommandBinding(Commands.DeleteCommand, new ExecutedRoutedEventHandler(DeleteCommand_Executed)));
        }

        private void DeleteCommand_Executed(object sender, ExecutedRoutedEventArgs e)
        {
            if (e.Parameter is string str)
            {
                if (PART_List?.ItemsSource is ICollection<string> s)
                    s.Remove(str);
            }
        }

        protected override void OnPreviewKeyUp(KeyEventArgs e)
        {
            if (e.Key == Key.Return)
            {
                if (!string.IsNullOrWhiteSpace(Text) && PART_List != null)
                {
                    if (PART_List.ItemsSource == null)
                        PART_List.ItemsSource = new ObservableCollection<string>();
                    if (PART_List.ItemsSource is ICollection<string> s)
                        s.Add(Text);
                }
                Text = string.Empty;
            }
            base.OnPreviewKeyUp(e);
        }




    }





}
